Gun holster



FIG. 1 is a front view of a gun holster according to the present application;

FIG. 2 is a right side view of the gun holster;

FIG. 3 is a left side view of the gun holster; and,

FIG. 4 is a top view of the gun holster. 

CLAIM The ornamental design for a gun holster, as shown and described. 